Deposits - Narrative (Details)	Mar. 31, 2024 USD ($) contract	Dec. 31, 2023 USD ($)
Deposit Liability [Line Items]
Time deposits exceeding FDIC limit	$ 2,100,000,000	$ 2,000,000,000
Interest Rate Swap
Deposit Liability [Line Items]
Number of derivative instruments \| contract	11
Notional amount	$ 105,000,000	105,000,000
Asset Pledged as Collateral
Deposit Liability [Line Items]
Investment securities	0	$ 0
Asset Pledged as Collateral \| Deposits
Deposit Liability [Line Items]
Investment securities	$ 865,600,000

Amount, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity), and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

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